Simulation And Experimental Research Of Ginseng Seed Metering Device Based On Discrete Element Method

It is urgent to develop a seed metering device suitable for ginseng seeds as soon as possible in the case of increasing demand for ginseng and low mechanization of ginseng seeding.In this paper,the research on seed metering devices is carried out by bench test and simulation,which designs two kinds of seed platter(wheel type seed metering device and spoon seed metering device)of three kinds of kinds of ginseng seeds(garden ginseng seed,woods grown ginseng seed and American ginseng seed).It also establishes a digital design method.The main content of this paper can be concluded as follows: describing present situation of mechanical seed metering device and applied research of the discrete element method at home and abroad;Studying on physical mechanics characteristics and analyzing the effect of different water content on physical mechanics characteristics of ginseng seeds;Arranging the bench test of seed metering device by means of the uniform design method of DPS software with the test indexes of reseeding rate,seeding rate and injury rate and analyzing the influence of different factors on the test indexes;Simulating the seeds by means of the discrete element method,analyzing the influence of speed and number of holes on the performance of seed metering by using the single factor and proving the feasibility and reliability of the discrete element method by the comparative analysis of multi-factor simulation and bench.It is urgent to develop a seed metering device suitable for ginseng seeds as soon as possible in the case of increasing demand for ginseng and low mechanization of ginseng seeding.In this paper,the research on seed metering devices is carried out by bench test and simulation,which designs two kinds of seed platter(wheel type seed metering device and spoon seed metering device)of three kinds of kinds of ginseng seeds(garden ginseng seed,woodsgrown ginseng seed and American ginseng seed).It also establishes a digital design method.The main content of this paper can be concluded as follows:describing present situation of mechanical seed metering device and applied research of the discrete element method at home and abroad;studying on physical mechanics characteristics and analyzing the effect of different water content on physical mechanics characteristics of ginseng seeds;arranging the bench test of seed metering device by means of the uniform design method of DPS software with the test indexes of reseeding rate,seeding rate and injury rate and analyzing the influence of different factors on the test indexes;simulating the seeds by means of the discrete element method,analyzing the influence of speed and number of holes on the performance of seed metering by using the single factor and proving the feasibility and reliability of the discrete element method by the comparative analysis of multi-factor simulation and bench.